CN103048439A - Pressure grouting experiment device - Google Patents
Pressure grouting experiment device Download PDFInfo
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- CN103048439A CN103048439A CN2012105097432A CN201210509743A CN103048439A CN 103048439 A CN103048439 A CN 103048439A CN 2012105097432 A CN2012105097432 A CN 2012105097432A CN 201210509743 A CN201210509743 A CN 201210509743A CN 103048439 A CN103048439 A CN 103048439A
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Abstract
The invention provides a pressure grouting experiment device comprising a slurry supplying device, wherein the slurry supplying device is communicated with a slurry hole of an experiment mould; a lower slurry hole of the experiment mould is communicated with a slurry recycling barrel; a plurality of pipelines are arranged on the outer wall of the experiment mould from top to bottom; each pipeline is provided with a pressure gage; and throttling valves are arranged between the slurry supplying device and the experiment mould and also between the experiment mould and the slurry recycling barrel. According to the pressure grouting experiment device disclosed by the invention, grouting stone bodies with the regular shape can be easily and conveniently obtained through using different moulds, and slurry dispersion radiuses under the different conditions can be obtained. In the testing process, pressure P provided by matching the pressure gages and a flow meter with a jack can relatively and effectively analyze influences of a testing parameter to each physical mechanical property of the stone bodies and the slurry dispersion radiuses. According to the pressure grouting experiment device disclosed by the invention, the grouting amount can be quantized, so that components of the stone bodies are also quantized. The pressure grouting experiment device is small and exquisite, convenient and easy to use, and is particularly suitable for being used in a laboratory.
Description
Technical field
The present invention relates to the experimental provision field, especially a kind of multi-functional experimental provision that is applicable to laboratory internal pressure grouting.
Background technology
At present geologic hazard takes place frequently, and slip casting can be carried out Dam Foundation Strengthened in Situ and can change its intrinsic physico-mechanical properties weak formation, so it is widely used in the civil construction project.Because complicated formation condition and the disguise of mortar depositing construction effect cause the research of grouting theory to lag behind engineering practice.Existing filling system spininess is to the needs of actual slip casting operation, for laboratory slip casting and better carry out in-house laboratory investigation certain restriction is arranged.
Obtaining of laboratory slip casting calculus body physico mechanical characteristic manyly cut rear experiment to it and recorded.In the slip casting mould, carry out fully artificial slip casting and obtain using after the direct maintenance processing of injecting cement paste, can simple and fast obtain required experimental data, and there is no the slip casting experimental provision for the laboratory in the prior art.Because the limitation of Practical Project, the research of the slip casting diffusion radius in the pressure grouting is difficulty relatively.
Summary of the invention
Technical matters to be solved by this invention provides a kind of pressure grouting experimental provision, can be in the slip casting experiment of indoor realization to Rock And Soil crack or gravelly soil hole.And this system pressure can carry out from main control.And the consumption of record slurries when supplying with.Die assembly is exquisite, and easy accessibility can provide pressure to treating the slip casting structure in the mould, effectively simulates as required the confined pressure state of poor strata.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of pressure grouting experimental provision, comprise slurry feeding device, and slurry feeding device is communicated with the slurry hole of experiment mould, and the slurry hole, bottom of experiment mould is communicated with the slurries recycling bin;
Be provided with from top to bottom a plurality of pipelines at the experiment mould outer wall, this pipeline is provided with tensimeter;
Be equipped with throttling valve between described slurry feeding device and the experiment mould and between experiment mould and the slurries recycling bin.
Described slurry feeding device comprises grouting pump, and the grout outlet of grouting pump is communicated with the first shunt, and shunting end of the first shunt is communicated with the slurry hole of experiment mould, and another shunting end is communicated with the stock inlet of grouting pump by the first throttle valve.
Also be provided with the second throttling valve and the second shunt between the slurry hole of described the first shunt and experiment mould, the shunting end of the second shunt is provided with water tank, hand operated forcepump and the 5th throttling valve for the slip casting experiment under the row hydraulic pressure successively.
Also be provided with the 3rd throttling valve and flowmeter between the slurry hole of described the first shunt and experiment mould.
The inner cavity size of described experiment mould is 150 * 150 * 500mm, perhaps is 1000 * 1000 * 1000mm.
In the described experiment mould, be connected drawing by many bolts between front panel and the rear panel, the side panel of both sides is between front panel and rear panel, the inwall of plate and rear panel is provided with the stopper slot for the constrained side positions of panels in front, is provided with sealing strip at side panel with the position that front panel contacts with rear panel;
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel or the rear panel;
The two ends of experiment mould are provided with the end panels that is fixedly connected with, and described end panels is provided with at least one slurry hole.
In another optional scheme, in the described experiment mould, be connected drawing by many bolts between front panel and the rear panel, the side panel of both sides is between front panel and rear panel, the inwall of plate and rear panel is provided with the stopper slot for the constrained side positions of panels in front, is provided with sealing strip at side panel with the position that front panel contacts with rear panel;
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel or the rear panel;
The lower end of experiment mould is provided with the end panels that is fixedly connected with, and described end panels is provided with at least one slurry hole;
The upper end of experiment mould is provided with the slip end cap that is slidingly matched with the experiment mould inner chamber;
Experiment mould (outside also be provided with reaction frame, between reaction frame and slip end cap, be provided with lifting jack.
Described slip end cap is two, is provided with the rubber slab for sealing between the slip end cap.
A kind of pressure grouting experimental provision provided by the invention, by the grouting pump that adopts, and the pressure control bolt that opening and grouting pump by control first throttle valve provide is controlled grouting pressure.By the access water tank, and carried out the packer permeability test of required injecting cement paste in the experiment mould by hand operated forcepump, further carry out the grouting test under the hydraulic pressure.Stitching section between the front panel of experiment mould, rear panel and the side panel is adopted silica gel strip to fill and is made its sealing on every side.The slit is crammed by accelerated cement around end panels and the experiment mould.Sealing is carried out and can be made slip casting calculus body even, guarantees its physico mechanical characteristic.
Experiment mould places under the reaction frame, under the lifting jack effect slip end cap is exerted pressure and reaches and filled with body, is filled with body settling amount or force value with control.The slurry hole, bottom that arranges is controlled in the slip casting by the discharge of gas or water in the filling body.A plurality of tensimeters that sidewall is installed can be used for analyzing the flowing law of slurries in mould.
A kind of pressure grouting experimental provision provided by the invention, by different mold uses both can be simple and convenient the slip casting calculus body that obtains regular shape, also can obtain the diffusion radius of slurries under the different condition.In its process of the test by tensimeter and flowmeter and the pressure P that cooperates lifting jack to provide, can more effective analytical test parameter on the impact of the every physical and mechanical property of calculus body and grout spreading range.Can quantize grouting amount among the present invention, so calculus body composition is also quantized.Compact volume and convenience of the present invention is easy-to-use, is particularly suitable for using in the laboratory.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the structural representation of experiment mould among the present invention.
Fig. 3 is the A-A cross-sectional schematic of Fig. 2 among the present invention.
Fig. 4 is the schematic top plan view of end panels among the present invention.
Fig. 5 is the schematic side view of end panels among the present invention.
Fig. 6 is the another kind of structural representation of experiment mould among the present invention.
Fig. 7 is the schematic top plan view of slip end cap among the present invention.
Among the figure: slurry agitation machine 1, blanking barrel 2, grouting pump 3, first throttle valve 4, the first tensimeters 5, the first shunts 6, the second throttling valve 7, the second shunts 8, the five throttling valve 9, hand operated forcepump 10, water tank 11, the three throttling valve 12, experiment mould 13, front panel 1301, side panel 1302, end panels 1303, stopper slot 1304, slurry hole 1305, slip end cap 1306, rubber slab 1307, rear panel 1308, the second tensimeter 14, the three tensimeters 15, the four tensimeters 16, the 5th tensimeter 17, slurries recycling bin 18, the four throttling valve 19, flowmeter 20, lifting jack 21, reaction frame 22.
Embodiment
In Fig. 1, a kind of pressure grouting experimental provision comprises slurry feeding device, and slurry feeding device is communicated with the slurry hole 1305 of experiment mould 13, and the slurry hole, bottom of experiment mould 13 is communicated with slurries recycling bin 18;
Be provided with from top to bottom a plurality of pipelines at experiment mould 13 outer walls, this pipeline is provided with tensimeter;
Be equipped with throttling valve between described slurry feeding device and the experiment mould 13 and between experiment mould 13 and the slurries recycling bin 18.
In Fig. 1, described slurry feeding device comprises grouting pump 3, the grout outlet of grouting pump 3 is communicated with the first shunt 6, and 6 one shunting ends of the first shunt are communicated with the slurry hole of experiment mould 13, and another shunting end is communicated with the stock inlet of grouting pump 3 by first throttle valve 4.In Fig. 1, slurry agitation machine 1 connects blanking barrel 2, gives grouting pump 3 feed by blanking barrel 2, and the capacity of slurry agitation system is 2 times of grouting pump, to satisfy the supply of slurries.
In Fig. 1, the shunting end that also is provided with the second throttling valve 7 and the second shunt 8, the second shunts 8 between the slurry hole of described the first shunt 6 and experiment mould 13 is provided with water tank 11, hand operated forcepump 10 and the 5th throttling valve 9 of testing for the slip casting under the row hydraulic pressure successively.The access water tank is carried out the packer permeability test of required injecting cement paste in the mould by hand operated forcepump, the step of going forward side by side is carried out the grouting test under the hydraulic pressure.Packer permeability test can carry out Choice tests by controlling the 5th throttling valve 9 among the present invention.
Also be provided with the 3rd throttling valve 12 and flowmeter 20 between the slurry hole of described the first shunt 6 and experiment mould 13.Pour into pressure and record grouting amounts by flowmeter 20 by regulating water check valve 12 control slurries.
The inner cavity size of described experiment mould 13 is 150 * 150 * 500mm, and inner cavity size is used for obtaining the cube injecting cement paste thus; Perhaps be 1000 * 1000 * 1000mm, inner cavity size obtains the calculus body thus, because this inner cavity size is larger, after filling rubble, the formation condition of earth with Simulation of Complex, slurries can spread in the rubble gap
,And measure its size to calculate grout spreading range.
In Fig. 1-5, in the described experiment mould 13, be connected drawing by many bolts between front panel 1301 and the rear panel 1308, the side panel 1302 of both sides is between front panel 1301 and rear panel 1308, the inwall of plate 1301 and rear panel 1308 is provided with the stopper slot 1304 for constrained side panel 1302 positions in front, is provided with sealing strip with front panel 1301 with the position that rear panel 1308 contacts at side panel 1302;
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel 1301 or the rear panel 1308;
The two ends of experiment mould 13 are provided with the end panels 1303 that is fixedly connected with, and described end panels 1303 is provided with at least one slurry hole 1305.
In another optional scheme, as shown in Fig. 1,6,7, in the described experiment mould 13, be connected drawing by many bolts between front panel 1301 and the rear panel 1308, the side panel 1302 of both sides is between front panel 1301 and rear panel 1308, the inwall of plate 1301 and rear panel 1308 is provided with the stopper slot 1304 for constrained side panel 1302 positions in front, is provided with sealing strip with front panel 1301 with the position that rear panel 1308 contacts at side panel 1302;
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel 1301 or the rear panel 1308;
The lower end of experiment mould 13 is provided with the end panels 1303 that is fixedly connected with, and described end panels 1303 is provided with at least one slurry hole 1305;
The upper end of experiment mould 13 is provided with the slip end cap 1306 that is slidingly matched with experiment mould 13 inner chambers;
Also be provided with reaction frame 22 outside the experiment mould 13, between reaction frame 22 and slip end cap 1306, be provided with lifting jack 21.
Described slip end cap 1306 is two, is provided with the rubber slab 1307 for sealing between the slip end cap 1306.
As shown in Figure 1: when being expert at packer permeability test, close the second throttling valve 7, open the 5th throttling valve 9, the 3rd throttling valve 12 and the 4th throttling valve 19, the operation that as required the 4th throttling valve 19 is opened and closed makes flowmeter 20 and the second tensimeter 14 that arranges from top to bottom at experiment mould 13 outer walls, the 3rd tensimeter 15, the 4th tensimeter 16, the 5th tensimeter 17 reach the desirable number of degrees or the observable number of degrees.
When obtaining calculus body grouting test, it is the experiment mould 13 of 150 * 150 * 500mm that inner cavity size is installed, close first the second throttling valve 7, open first throttle valve 4, start grouting pump 3 and check the slurry reflux situation, then close the 5th throttling valve 9, open first throttle valve 4, the second throttling valve 7, the 3rd throttling valve 12 and the 19 beginning slip castings of the 4th throttling valve.Aperture control grouting pump 3 outlet slurries pressure by regulating first throttle valve 4 are also observed by the reading of the first tensimeter 5, regulate that the 3rd throttling valve 12 control slurries pour into pressure and by showing shown in the flowmeter 20 that flow value controls.Can with the pipeline that connects the 3rd tensimeter 15, the 4th tensimeter 16 and the 5th tensimeter 17 suitably with carry out exhaust or drainpipe and be connected.
When obtaining diffusion radius grouting test, it is the experiment mould 13 of 1000 * 1000 * 1000mm that inner cavity size is installed, and all the other steps are with obtaining calculus body grouting test implementation method.
The general working routine of device of the present invention is: pack into and filled with body, check the second tensimeter 14, the 3rd tensimeter 15, the 4th tensimeter 16 and the 5th tensimeter 17, check that its precision and centering situation determine that instrument is normal, the 4th throttling valve 19 in slurry hole 1305 is opened, and it provides pressure P as shown in Figure 1 to utilize jack pair 22 times at reaction frame again.
Connect water pressuring system and grouting pump, whether instrument installs each path of rear inspection normal, and instrument whether return to zero by centering;
Slurry agitation machine 1 will be poured slurries in the grouting pump 3 into by blanking barrel 2 behind the slurry agitation, closes the 5th throttling valve 9, carries out grouting test.
Carry out as required above-mentioned packer permeability test.
Slip casting is closed the 3rd throttling valve 12 and the 4th throttling valve 19 after finishing, and cleans all pipelines and testing equipment.Injecting cement paste is opened in right amount the 4th throttling valve 19 by the presetting period of design slurries and is emitted the moisture of separating out in the mould in the experiment mould 13.
Obtain the cube injecting cement paste, the cleaning mould after removing the experiment mould 13 that inner cavity size is 150 * 150 * 500mm by design time.
With the mould traverse, injecting cement paste is placed on the side plate during form removal, integral body carefully moves to the injecting cement paste assigned address and avoids to greatest extent external damage to guarantee injecting cement paste again.The maintenance injecting cement paste is done later physico mechanical characteristic test.
Removing inner cavity size by design time is the experiment mould 13 rear cleaning calculus bodies of 1000 * 1000 * 1000mm, and observation calculus shape is also measured its size and calculated grout spreading range.
Claims (8)
1. a pressure grouting experimental provision comprises slurry feeding device, it is characterized in that: slurry feeding device is communicated with the slurry hole (1305) of experiment mould (13), and the slurry hole, bottom of experiment mould (13) is communicated with slurries recycling bin (18);
Be provided with from top to bottom a plurality of pipelines at experiment mould (13) outer wall, this pipeline is provided with tensimeter;
Be equipped with throttling valve between described slurry feeding device and the experiment mould (13) and between experiment mould (13) and the slurries recycling bin (18).
2. a kind of pressure grouting experimental provision according to claim 1, it is characterized in that: described slurry feeding device comprises grouting pump (3), the grout outlet of grouting pump (3) is communicated with the first shunt (6), (6) shunting ends of the first shunt are communicated with the slurry hole of experiment mould (13), and another shunting end is communicated with the stock inlet of grouting pump (3) by first throttle valve (4).
3. a kind of pressure grouting experimental provision according to claim 2, it is characterized in that: also be provided with the second throttling valve (7) and the second shunt (8) between the slurry hole of described the first shunt (6) and experiment mould (13), the shunting end of the second shunt (8) is provided with water tank (11), hand operated forcepump (10) and the 5th throttling valve (9) for the slip casting experiment under the row hydraulic pressure successively.
4. a kind of pressure grouting experimental provision according to claim 2 is characterized in that: also be provided with the 3rd throttling valve (12) and flowmeter (20) between the slurry hole of described the first shunt (6) and experiment mould (13).
5. a kind of pressure grouting experimental provision according to claim 1, it is characterized in that: the inner cavity size of described experiment mould (13) is 150 * 150 * 500mm, perhaps is 1000 * 1000 * 1000mm.
6. a kind of pressure grouting experimental provision according to claim 1, it is characterized in that: in the described experiment mould (13), be connected drawing by many bolts between front panel (1301) and the rear panel (1308), the side panel of both sides (1302) is positioned between front panel (1301) and the rear panel (1308), the inwall of plate (1301) and rear panel (1308) is provided with the stopper slot (1304) for constrained side panel (1302) position in front, is provided with sealing strip with front panel (1301) with the position that rear panel (1308) contacts at side panel (1302);
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel (1301) or the rear panel (1308);
The two ends of experiment mould (13) are provided with the end panels (1303) that is fixedly connected with, and described end panels (1303) is provided with at least one slurry hole (1305).
7. a kind of pressure grouting experimental provision according to claim 1, it is characterized in that: in the described experiment mould (13), be connected drawing by many bolts between front panel (1301) and the rear panel (1308), the side panel of both sides (1302) is positioned between front panel (1301) and the rear panel (1308), the inwall of plate (1301) and rear panel (1308) is provided with the stopper slot (1304) for constrained side panel (1302) position in front, is provided with sealing strip with front panel (1301) with the position that rear panel (1308) contacts at side panel (1302);
Be provided with from top to bottom a plurality of holes for external pipeline on described front panel (1301) or the rear panel (1308);
The lower end of experiment mould (13) is provided with the end panels (1303) that is fixedly connected with, and described end panels (1303) is provided with at least one slurry hole (1305);
The upper end of experiment mould (13) is provided with the slip end cap (1306) that is slidingly matched with experiment mould (13) inner chamber;
Also be provided with reaction frame (22) outside the experiment mould (13), between reaction frame (22) and slip end cap (1306), be provided with lifting jack (21).
8. a kind of pressure grouting experimental provision according to claim 7, it is characterized in that: described slip end cap (1306) is two, is provided with the rubber slab (1307) for sealing between the slip end cap (1306).
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| CN103645306A (en) * | 2013-12-18 | 2014-03-19 | 中国地质大学（北京） | Grouting experiment equipment |
| CN103698483A (en) * | 2013-12-26 | 2014-04-02 | 中国矿业大学(北京) | Method for laboratory grouting test of test block |
| CN104062408A (en) * | 2014-07-08 | 2014-09-24 | 北京科技大学 | Layered grouting model test system |
| CN104215510A (en) * | 2014-10-10 | 2014-12-17 | 山东科技大学 | Simulation test device for drilling grouting |
| CN104535461A (en) * | 2015-01-08 | 2015-04-22 | 中国水利水电科学研究院 | Device and method for monitoring diffusion process of cement grouting fluid in sand gravel layer |
| CN105067221A (en) * | 2015-07-02 | 2015-11-18 | 山东大学 | Dynamic induction simulation device for broken surrounding rock grouting reinforcement, and testing method therefor |
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| CN105424892A (en) * | 2015-12-23 | 2016-03-23 | 山东大学 | Intelligent grouting test system based on triangle rotor grouting pump and test method thereof |
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| CN103645306B (en) * | 2013-12-18 | 2016-07-06 | 中国地质大学（北京） | Slip casting experimental facilities |
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| CN104535461B (en) * | 2015-01-08 | 2017-05-24 | 中国水利水电科学研究院 | Method for monitoring diffusion process of cement grouting fluid in sand gravel layer |
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Application publication date: 20130417 |